372 lines
9.2 KiB
Go
372 lines
9.2 KiB
Go
package digestset
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import (
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"crypto/sha256"
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_ "crypto/sha512"
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"encoding/binary"
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"math/rand"
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"testing"
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digest "github.com/opencontainers/go-digest"
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)
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func assertEqualDigests(t *testing.T, d1, d2 digest.Digest) {
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if d1 != d2 {
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t.Fatalf("Digests do not match:\n\tActual: %s\n\tExpected: %s", d1, d2)
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}
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}
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func TestLookup(t *testing.T) {
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digests := []digest.Digest{
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"sha256:1234511111111111111111111111111111111111111111111111111111111111",
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"sha256:1234111111111111111111111111111111111111111111111111111111111111",
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"sha256:1234611111111111111111111111111111111111111111111111111111111111",
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"sha256:5432111111111111111111111111111111111111111111111111111111111111",
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"sha256:6543111111111111111111111111111111111111111111111111111111111111",
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"sha256:6432111111111111111111111111111111111111111111111111111111111111",
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"sha256:6542111111111111111111111111111111111111111111111111111111111111",
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"sha256:6532111111111111111111111111111111111111111111111111111111111111",
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}
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dset := NewSet()
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for i := range digests {
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if err := dset.Add(digests[i]); err != nil {
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t.Fatal(err)
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}
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}
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dgst, err := dset.Lookup("54")
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if err != nil {
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t.Fatal(err)
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}
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assertEqualDigests(t, dgst, digests[3])
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_, err = dset.Lookup("1234")
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if err == nil {
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t.Fatal("Expected ambiguous error looking up: 1234")
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}
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if err != ErrDigestAmbiguous {
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t.Fatal(err)
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}
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_, err = dset.Lookup("9876")
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if err == nil {
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t.Fatal("Expected not found error looking up: 9876")
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}
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if err != ErrDigestNotFound {
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t.Fatal(err)
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}
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_, err = dset.Lookup("sha256:1234")
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if err == nil {
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t.Fatal("Expected ambiguous error looking up: sha256:1234")
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}
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if err != ErrDigestAmbiguous {
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t.Fatal(err)
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}
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dgst, err = dset.Lookup("sha256:12345")
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if err != nil {
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t.Fatal(err)
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}
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assertEqualDigests(t, dgst, digests[0])
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dgst, err = dset.Lookup("sha256:12346")
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if err != nil {
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t.Fatal(err)
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}
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assertEqualDigests(t, dgst, digests[2])
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dgst, err = dset.Lookup("12346")
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if err != nil {
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t.Fatal(err)
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}
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assertEqualDigests(t, dgst, digests[2])
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dgst, err = dset.Lookup("12345")
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if err != nil {
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t.Fatal(err)
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}
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assertEqualDigests(t, dgst, digests[0])
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}
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func TestAddDuplication(t *testing.T) {
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digests := []digest.Digest{
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"sha256:1234111111111111111111111111111111111111111111111111111111111111",
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"sha256:1234511111111111111111111111111111111111111111111111111111111111",
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"sha256:1234611111111111111111111111111111111111111111111111111111111111",
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"sha256:5432111111111111111111111111111111111111111111111111111111111111",
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"sha256:6543111111111111111111111111111111111111111111111111111111111111",
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"sha512:65431111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111",
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"sha512:65421111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111",
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"sha512:65321111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111",
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}
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dset := NewSet()
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for i := range digests {
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if err := dset.Add(digests[i]); err != nil {
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t.Fatal(err)
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}
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}
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if len(dset.entries) != 8 {
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t.Fatal("Invalid dset size")
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}
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if err := dset.Add(digest.Digest("sha256:1234511111111111111111111111111111111111111111111111111111111111")); err != nil {
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t.Fatal(err)
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}
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if len(dset.entries) != 8 {
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t.Fatal("Duplicate digest insert should not increase entries size")
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}
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if err := dset.Add(digest.Digest("sha384:123451111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111")); err != nil {
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t.Fatal(err)
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}
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if len(dset.entries) != 9 {
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t.Fatal("Insert with different algorithm should be allowed")
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}
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}
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func TestRemove(t *testing.T) {
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digests, err := createDigests(10)
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if err != nil {
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t.Fatal(err)
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}
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dset := NewSet()
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for i := range digests {
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if err := dset.Add(digests[i]); err != nil {
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t.Fatal(err)
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}
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}
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dgst, err := dset.Lookup(digests[0].String())
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if err != nil {
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t.Fatal(err)
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}
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if dgst != digests[0] {
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t.Fatalf("Unexpected digest value:\n\tExpected: %s\n\tActual: %s", digests[0], dgst)
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}
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if err := dset.Remove(digests[0]); err != nil {
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t.Fatal(err)
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}
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if _, err := dset.Lookup(digests[0].String()); err != ErrDigestNotFound {
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t.Fatalf("Expected error %v when looking up removed digest, got %v", ErrDigestNotFound, err)
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}
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}
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func TestAll(t *testing.T) {
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digests, err := createDigests(100)
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if err != nil {
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t.Fatal(err)
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}
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dset := NewSet()
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for i := range digests {
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if err := dset.Add(digests[i]); err != nil {
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t.Fatal(err)
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}
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}
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all := map[digest.Digest]struct{}{}
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for _, dgst := range dset.All() {
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all[dgst] = struct{}{}
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}
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if len(all) != len(digests) {
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t.Fatalf("Unexpected number of unique digests found:\n\tExpected: %d\n\tActual: %d", len(digests), len(all))
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}
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for i, dgst := range digests {
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if _, ok := all[dgst]; !ok {
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t.Fatalf("Missing element at position %d: %s", i, dgst)
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}
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}
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}
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func assertEqualShort(t *testing.T, actual, expected string) {
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if actual != expected {
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t.Fatalf("Unexpected short value:\n\tExpected: %s\n\tActual: %s", expected, actual)
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}
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}
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func TestShortCodeTable(t *testing.T) {
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digests := []digest.Digest{
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"sha256:1234111111111111111111111111111111111111111111111111111111111111",
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"sha256:1234511111111111111111111111111111111111111111111111111111111111",
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"sha256:1234611111111111111111111111111111111111111111111111111111111111",
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"sha256:5432111111111111111111111111111111111111111111111111111111111111",
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"sha256:6543111111111111111111111111111111111111111111111111111111111111",
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"sha256:6432111111111111111111111111111111111111111111111111111111111111",
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"sha256:6542111111111111111111111111111111111111111111111111111111111111",
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"sha256:6532111111111111111111111111111111111111111111111111111111111111",
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}
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dset := NewSet()
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for i := range digests {
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if err := dset.Add(digests[i]); err != nil {
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t.Fatal(err)
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}
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}
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dump := ShortCodeTable(dset, 2)
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if len(dump) < len(digests) {
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t.Fatalf("Error unexpected size: %d, expecting %d", len(dump), len(digests))
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}
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assertEqualShort(t, dump[digests[0]], "12341")
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assertEqualShort(t, dump[digests[1]], "12345")
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assertEqualShort(t, dump[digests[2]], "12346")
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assertEqualShort(t, dump[digests[3]], "54")
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assertEqualShort(t, dump[digests[4]], "6543")
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assertEqualShort(t, dump[digests[5]], "64")
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assertEqualShort(t, dump[digests[6]], "6542")
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assertEqualShort(t, dump[digests[7]], "653")
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}
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func createDigests(count int) ([]digest.Digest, error) {
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r := rand.New(rand.NewSource(25823))
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digests := make([]digest.Digest, count)
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for i := range digests {
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h := sha256.New()
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if err := binary.Write(h, binary.BigEndian, r.Int63()); err != nil {
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return nil, err
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}
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digests[i] = digest.NewDigest("sha256", h)
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}
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return digests, nil
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}
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func benchAddNTable(b *testing.B, n int) {
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digests, err := createDigests(n)
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if err != nil {
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b.Fatal(err)
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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dset := &Set{entries: digestEntries(make([]*digestEntry, 0, n))}
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for j := range digests {
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if err = dset.Add(digests[j]); err != nil {
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b.Fatal(err)
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}
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}
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}
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}
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func benchLookupNTable(b *testing.B, n int, shortLen int) {
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digests, err := createDigests(n)
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if err != nil {
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b.Fatal(err)
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}
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dset := &Set{entries: digestEntries(make([]*digestEntry, 0, n))}
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for i := range digests {
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if err := dset.Add(digests[i]); err != nil {
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b.Fatal(err)
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}
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}
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shorts := make([]string, 0, n)
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for _, short := range ShortCodeTable(dset, shortLen) {
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shorts = append(shorts, short)
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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if _, err = dset.Lookup(shorts[i%n]); err != nil {
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b.Fatal(err)
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}
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}
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}
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func benchRemoveNTable(b *testing.B, n int) {
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digests, err := createDigests(n)
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if err != nil {
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b.Fatal(err)
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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dset := &Set{entries: digestEntries(make([]*digestEntry, 0, n))}
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b.StopTimer()
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for j := range digests {
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if err = dset.Add(digests[j]); err != nil {
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b.Fatal(err)
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}
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}
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b.StartTimer()
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for j := range digests {
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if err = dset.Remove(digests[j]); err != nil {
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b.Fatal(err)
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}
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}
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}
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}
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func benchShortCodeNTable(b *testing.B, n int, shortLen int) {
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digests, err := createDigests(n)
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if err != nil {
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b.Fatal(err)
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}
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dset := &Set{entries: digestEntries(make([]*digestEntry, 0, n))}
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for i := range digests {
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if err := dset.Add(digests[i]); err != nil {
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b.Fatal(err)
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}
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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ShortCodeTable(dset, shortLen)
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}
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}
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func BenchmarkAdd10(b *testing.B) {
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benchAddNTable(b, 10)
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}
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func BenchmarkAdd100(b *testing.B) {
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benchAddNTable(b, 100)
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}
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func BenchmarkAdd1000(b *testing.B) {
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benchAddNTable(b, 1000)
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}
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func BenchmarkRemove10(b *testing.B) {
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benchRemoveNTable(b, 10)
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}
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func BenchmarkRemove100(b *testing.B) {
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benchRemoveNTable(b, 100)
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}
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func BenchmarkRemove1000(b *testing.B) {
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benchRemoveNTable(b, 1000)
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}
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func BenchmarkLookup10(b *testing.B) {
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benchLookupNTable(b, 10, 12)
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}
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func BenchmarkLookup100(b *testing.B) {
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benchLookupNTable(b, 100, 12)
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}
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func BenchmarkLookup1000(b *testing.B) {
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benchLookupNTable(b, 1000, 12)
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}
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func BenchmarkShortCode10(b *testing.B) {
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benchShortCodeNTable(b, 10, 12)
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}
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func BenchmarkShortCode100(b *testing.B) {
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benchShortCodeNTable(b, 100, 12)
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}
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func BenchmarkShortCode1000(b *testing.B) {
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benchShortCodeNTable(b, 1000, 12)
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}
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